Conversion of glassy antiferromagnetic-insulating phase to equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$

Abstract

We show that Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$ with 2.5% Al substitution and La${}_{0.5}$Ca${}_{0.5}$MnO${}_3$ (LCMO) exhibit qualitatively similar and visibly anomalous M-H curves at low temperature. Magnetic field causes a broad first-order but irreversible antiferromagnetic (AF)-insulating (I) to ferromagnetic (FM)-metallic (M) transition in both and gives rise to soft FM state. However, the low temperature equilibrium state of Pr${}_{0.5}$Ca${}_{0.5}$Mn${}_{0.975}$Al${}_{0.025}$O${}_3$ (PCMAO) is FM-M whereas that of LCMO is AF-I. In both the systems the respective equilibrium phase coexists with the other phase with contrasting order, which is not in equilibrium, and the cooling field can tune the fractions of the coexisting phases. It is shown earlier that the coexisting FM-M phase behaves like `magnetic glass' in LCMO. Here we show from specially designed measurement protocols that the AF-I phase of PCMAO has all the characteristics of magnetic glassy states. It devitrifies on heating and also recrystallizes to equilibrium FM-M phase after annealing. This glass-like AF-I phase also shows similar intriguing feature observed in FM-M magnetic glassy state of LCMO that when the starting coexisting fraction of glass is larger, successive annealing results in larger fraction of equilibrium phase. This similarity between two manganite systems with contrasting magnetic orders of respective glassy and equilibrium phases points toward a possible universality.

Highlights potential of CHUF (Cooling and Heating in Unequal Fields), a new measurement protocol

References in corpus (9)

• Complexity in Strongly Correlated Electronic Systems
• Charge ordered ferromagnetic phase in La0.5Ca0.5MnO3
• Relating supercooling and glass-like arrest of kinetics for phase separated systems: studies on doped CeFe${}_2$ and (La,Pr,Ca)MnO${}_3$
• Ferromagnetic ground state of the robust charge-ordered manganite Pr(0.5)Ca(0.5MnO(3)obtained by minimal Al-substitution
• Anomalous First Order Transition in $Nd{}_{0.5}Sr{}_{0.5}MnO{}_3$: An interplay between kinetic arrest and thermodynamic transitions
• Coexisting tuneable fractions of glassy and equilibrium long-range-order phases in manganites
• Field induced magnetic transition and metastability in Co substituted $M{n}_{2}Sb$
• Formation of finite antiferromagnetic clusters and the effect of electronic phase separation in Pr{_0.5}Ca{_0.5}Mn{_0.975}Al{_0.025}O{_3}
• Effect of Al substitution on the charge ordered Pr{_0.5}Ca{_0.5}MnO{_3}: Structure, Magnetism and Transport

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